42 -Ä-rt. 1.— M. Yokoyauia: 



shallow, obtuse-angled at bottom. Height 10 niilHm. ])iaineter 

 5.5 milliin. 



In general, the shoulder-angle is most conspicuous in the 

 specimens with sharp sculptures, while in those with fainter ones 

 it is more or less rounded. A few specimens found at Sliito show 

 tiie latter cliaracter. 



Fossil occurrence. — ^Shito. Oji (numerous). 



S7. Jlaiifjiliu fuhuchUntii, Yokoyaina. 

 PI. I. Fig. 34. 



Shell small, tolerably solid, subfusiform. Whorls about eight, 

 the first two smooth and rounded, the remaining obtusely suban- 

 gulate a little below the middle with the surface above the angle 

 flat and obliquely sloping, below nearly vertical. The sculpture 

 consists of longitudinal ribs and spiral striae. Ribs about eight in 

 number, rounded, obhque, somewhat curved with the concave side 

 towards the front, separated by interv^als of a nearly equal breadth. 

 Spiral striae fine, numerous, close together, rather indistinct (seen 

 only with a lens). Body-whorl somewhat longer than spire, 

 rounded, rather gradually tapering anteriorly, with the ribs evanes- 

 cent on the base. Aperture ovate, posteriorly acute, anteriorly 

 truncate, with a broad, hardly developed canal. Inner lip varicose 

 without. Lip-sinus moderate in depth. A single specimefn, 65 

 millim. in height and 4 millim. in diameter. 



Fossil occurrence. — Otake. 



Living. — Central Japan. 



3S. JJatifjilia {Ctythnrtt) rutfoso/ahiafa, Yokoyama. 



PI. L Fig. 35. 



Shell small, rather solid, fusiform. Wliorls eight and a half, 

 tlie first two and a half smuotli and rounded, the remaining bluntly 

 angulate a little below the middle, with the surface above the angle 

 slightly concave and steeply sloping, below flat and nearly vertical. 

 Longitudinally ribbed and spirally striate. Ribs eight on the 



